AIIMS 2014 Chemistry Electrolysis MCQ Question
Assertion Electrolysis of molten CaH2 produces hydrogen gas at anode. Reason In CaH2, hydrogen is present in the form of hydride H−.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Both Assertion and Reason are true and Reason is not the correct explanation of Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
Correct Answer
Detailed Explanation
The correct answer is A because during the electrolysis of molten calcium hydride (CaH2), hydrogen ions (H−) migrate to the anode where they lose electrons and are oxidized to form hydrogen gas (H2). The reason provided is true as well, since hydrogen in CaH2 is indeed present as hydride ions (H−), elucidating why hydrogen gas is produced at the anode during the process.
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